21174656

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:331

約数の個数: 64

約数和(自身を含む): 46046880

約数和(自身を除く): 24872224

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 37, 64, 68, 74, 128, 136, 148, 263, 272, 296, 526, 544, 592, 629, 1052, 1088, 1184, 1258, 2104, 2176, 2368, 2516, 4208, 4471, 4736, 5032, 8416, 8942, 9731, 10064, 16832, 17884, 19462, 20128, 33664, 35768, 38924, 40256, 71536, 77848, 80512, 143072, 155696, 165427, 286144, 311392, 330854, 572288, 622784, 661708, 1245568, 1323416, 2646832, 5293664, 10587328, 21174656]

約数ペア:

[(1, 21174656), (2, 10587328), (4, 5293664), (8, 2646832), (16, 1323416), (17, 1245568), (32, 661708), (34, 622784), (37, 572288), (64, 330854), (68, 311392), (74, 286144), (128, 165427), (136, 155696), (148, 143072), (263, 80512), (272, 77848), (296, 71536), (526, 40256), (544, 38924), (592, 35768), (629, 33664), (1052, 20128), (1088, 19462), (1184, 17884), (1258, 16832), (2104, 10064), (2176, 9731), (2368, 8942), (2516, 8416), (4208, 5032), (4471, 4736)]